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Ma Y, Fan C, Wang Y, Li W, Jiang H, Yang W. Comprehensive analysis of mRNAs in the cerebral cortex in APP/PS1 double-transgenic mice with Alzheimer's disease based on high-throughput sequencing of N4-acetylcytidine. Funct Integr Genomics 2023; 23:267. [PMID: 37548859 DOI: 10.1007/s10142-023-01192-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 07/12/2023] [Accepted: 07/29/2023] [Indexed: 08/08/2023]
Abstract
N4-acetylcytidine (ac4C), a significant modified nucleoside, participates in the development of many diseases. Messenger RNAs (mRNAs) contain most of the information of the genome and are the molecules that transmit information from genes to proteins. Alzheimer's disease (AD) is a progressive neurodegenerative disease in which fibrillar amyloid plaques are present. However, it remains unknown how mRNA ac4C modification affects the development of AD. In the current study, ac4C-modified mRNAs were comprehensively analyzed in AD mice by ac4C-RIP-seq and RNA-seq. Next, a protein-protein interaction (PPI) network was constructed to examine the relationships between the genes with differential ac4C modification levels and their RNA expression levels. The differentially expressed genes (DEGs) acquired above were subjected to Gene Ontology (GO) enrichment and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis to further analyze the molecular mechanisms in AD. In total, 3312 significant ac4C peaks were found on 2512 mRNAs, 1241 of which were hyperacetylated and 1271 of which were hypoacetylated. In addition, 956 mRNAs with differential expression were found, including 520 upregulated mRNAs and 436 downregulated mRNAs. Overall, 134 mRNAs with simultaneous changes at the ac4C levels as well as RNA expression levels were identified via joint analysis. Then, through PPI network construction and functional enrichment analysis, 37 key mRNAs were screened, which were predominantly enriched in GABAergic synapses and the PI3K/AKT signaling pathway. The significant difference in the abundance of mRNA ac4C modification indicates that this modification is associated with AD progression, which may provide insight for more investigations of the potential mechanisms.
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Affiliation(s)
- Yanzhen Ma
- Experimental Center of Clinical Research, The First Affiliated Hospital of Anhui University of Chinese Medicine, Anhui, China
| | - Chang Fan
- Experimental Center of Clinical Research, The First Affiliated Hospital of Anhui University of Chinese Medicine, Anhui, China
| | - Yongzhong Wang
- Key Laboratory of Xin'an Medicine of the Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui, China
- Department of Pharmacy, The First Affiliated Hospital of Anhui University of Chinese Medicine, Anhui, China
| | - Weizu Li
- Department of Pharmacology, Basic Medicine College, Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Anhui Medical University, Hefei, China
| | - Hui Jiang
- Experimental Center of Clinical Research, The First Affiliated Hospital of Anhui University of Chinese Medicine, Anhui, China.
- Key Laboratory of Xin'an Medicine of the Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui, China.
| | - Wenming Yang
- Key Laboratory of Xin'an Medicine of the Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui, China.
- Encephalopathy Center, The First Affiliated Hospital of Anhui University of Chinese Medicine, Anhui, China.
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Huang Z, Liu S, Tang A, Wu X, Aube J, Xu L, Huang Y. Targeting RNA-binding protein HuR to inhibit the progression of renal tubular fibrosis. J Transl Med 2023; 21:428. [PMID: 37391777 PMCID: PMC10311833 DOI: 10.1186/s12967-023-04298-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 06/23/2023] [Indexed: 07/02/2023] Open
Abstract
BACKGROUND Upregulation of an RNA-binding protein HuR has been implicated in glomerular diseases. Herein, we evaluated whether it is involved in renal tubular fibrosis. METHODS HuR was firstly examined in human kidney biopsy tissue with tubular disease. Second, its expression and the effect of HuR inhibition with KH3 on tubular injury were further assessed in a mouse model induced by a unilateral renal ischemia/reperfusion (IR). KH3 (50 mg kg-1) was given daily via intraperitoneal injection from day 3 to 14 after IR. Last, one of HuR-targeted pathways was examined in cultured proximal tubular cells. RESULTS HuR significantly increases at the site of tubular injury both in progressive CKD in patients and in IR-injured kidneys in mice, accompanied by upregulation of HuR targets that are involved in inflammation, profibrotic cytokines, oxidative stress, proliferation, apoptosis, tubular EMT process, matrix remodeling and fibrosis in renal tubulointerstitial fibrosis. KH3 treatment reduces the IR-induced tubular injury and fibrosis, accompanied by the remarkable amelioration in those involved pathways. A panel of mRNA array further revealed that 519 molecules in mouse kidney following IR injury changed their expression and 71.3% of them that are involved in 50 profibrotic pathways, were ameliorated when treated with KH3. In vitro, TGFβ1 induced tubular HuR cytoplasmic translocation and subsequent tubular EMT, which were abrogated by KH3 administration in cultured HK-2 cells. CONCLUSIONS These results suggest that excessive upregulation of HuR contributes to renal tubulointerstitial fibrosis by dysregulating genes involved in multiple profibrotic pathways and activating the TGFß1/HuR feedback circuit in tubular cells. Inhibition of HuR may have therapeutic potential for renal tubular fibrosis.
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Affiliation(s)
- Zhimin Huang
- Division of Nephrology & Hypertension, Department of Internal Medicine, University of Utah Health Science, Wintrobe Rm 403, 26 N Medical Dr., Salt Lake City, UT, 84132, USA
| | - Simeng Liu
- Division of Nephrology & Hypertension, Department of Internal Medicine, University of Utah Health Science, Wintrobe Rm 403, 26 N Medical Dr., Salt Lake City, UT, 84132, USA
| | - Anna Tang
- Division of Nephrology & Hypertension, Department of Internal Medicine, University of Utah Health Science, Wintrobe Rm 403, 26 N Medical Dr., Salt Lake City, UT, 84132, USA
| | - Xiaoqing Wu
- Department of Molecular Biosciences, University of Kansas, Lawrence, KS, USA
| | - Jeffrey Aube
- Department of Chemical Biology and Medical Chemistry, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, USA
| | - Liang Xu
- Department of Molecular Biosciences, University of Kansas, Lawrence, KS, USA
| | - Yufeng Huang
- Division of Nephrology & Hypertension, Department of Internal Medicine, University of Utah Health Science, Wintrobe Rm 403, 26 N Medical Dr., Salt Lake City, UT, 84132, USA.
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Wu S, Yun J, Tang W, Familiari G, Relucenti M, Wu J, Li X, Chen H, Chen R. Therapeutic m 6A Eraser ALKBH5 mRNA-Loaded Exosome-Liposome Hybrid Nanoparticles Inhibit Progression of Colorectal Cancer in Preclinical Tumor Models. ACS NANO 2023. [PMID: 37310898 DOI: 10.1021/acsnano.3c03050] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Although therapeutic targets have been developed for colorectal cancer (CRC) therapy, the therapeutic effects are not ideal and the survival rate for CRC patients remains poor. Therefore, it is crucial to recognize a specific target and develop an efficacious delivery system for CRC therapy. Herein, we demonstrate that reduced ALKBH5 mediates aberrant m6A modification and tumor progression in CRC. Mechanically, histone deacetylase 2-mediated H3K27 deacetylation inhibits ALKBH5 transcription in CRC, whereas ectopic ALKBH5 expression decreases tumorigenesis of CRC cells and protects mice from colitis-associated tumor development. Further, METTL14/ALKBH5/IGF2BPs combine to modulate JMJD8 stability in an m6A-dependent manner, which increases glycolysis and accelerates the development of CRC by enhancing the enzymatic activity of PKM2. Moreover, ALKBH5 mRNA-loaded folic acid-modified exosome-liposome hybrid nanoparticles were synthesized and significantly inhibit the progression of CRC in preclinical tumor models by modulating the ALKBH5/JMJD8/PKM2 axis and inhibiting glycolysis. Overall, our research confirms the crucial function of ALKBH5 in regulating the m6A status in CRC and provides a direct preclinical approach for using ALKBH5 mRNA nanotherapeutics for CRC.
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Affiliation(s)
- Shenshen Wu
- School of Public Health, Capital Medical University, Beijing 100069, China
| | - Jun Yun
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China
| | - Weiyan Tang
- Medical Oncology, Jiangsu Cancer Hospital, Nanjing 210009, China
| | - Giuseppe Familiari
- Department of Anatomical, Histological, Medical and Legal Locomotive Apparatus, Section of Human Anatomy Via Alfonso Borelli, Sapienza University of Rome, Roma 5000161, Italy
| | - Michela Relucenti
- Department of Anatomical, Histological, Forensic Medicine and Orthopedic Science, Sapienza University of Rome, Roma 5000161, Italy
| | - Jiong Wu
- School of Life Sciences, Jiangsu Normal University, Xuzhou 221116, China
| | - Xiaobo Li
- School of Public Health, Capital Medical University, Beijing 100069, China
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China
| | - Hanqing Chen
- School of Public Health, Capital Medical University, Beijing 100069, China
| | - Rui Chen
- School of Public Health, Capital Medical University, Beijing 100069, China
- Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing 100069, China
- Beijing Laboratory of Allergic Diseases, Capital Medical University, Beijing 100069, China
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
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Du Q, Dong T, Liu Y, Zhu X, Li N, Dang L, Cao J, Jin Q, Sun J. Screening criteria of mRNA indicators for wound age estimation. Forensic Sci Res 2023; 7:714-725. [PMID: 36817234 PMCID: PMC9930757 DOI: 10.1080/20961790.2021.1986770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
Wound age estimation is a crucial and challenging problem in forensic pathology. Although mRNA is the most commonly used indicator for wound age estimation, screening criteria are lacking. In the present study, the feasibility of screening criteria using mRNA to determine injury time based on the adenylate-uridylate-rich element (ARE) structure and gene ontology (GO) categories were evaluated. A total of 78 Sprague-Dawley male rats were contused and sampled at 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, and 48 h after inflicting injury. The candidate mRNAs were classified based on with or without ARE structure and GO category function. The mRNA expression levels were detected using qRT-PCR. In addition, the standard deviation (STD), mean deviation (MD), relative average deviation (d%), and coefficient of variation (CV) were calculated based on mRNA expression levels. The CV score (CVs) and the CV of CV (CV'CV) were calculated to measure heterogeneity. Finally, based on classic principles, the accuracy of combination of candidate mRNAs was assessed using discriminant analysis to construct a multivariate model for inferring wound age. The results of homogeneity evaluation of each group based on CVs were consistent with the MD, STD, d%, and CV results, indicating the credibility of the evaluation results based on CVs. The candidate mRNAs without ARE structure and classified as cellular component (CC) GO category (ARE-CC) had the highest CVs, showing the mRNAs with these characteristics are the most homogenous mRNAs and best suited for wound age estimation. The highest accuracy was 91.0% when the mRNAs without ARE structure were used to infer the wound age based on the discrimination model. The accuracy of mRNAs classified into CC or multiple function (MF) GO category was higher than mRNAs in the biological process (BP) category. In all subgroups, the accuracy of the composite identification model of mRNA composition without ARE structure and classified as CC was higher than other subgroups. The mRNAs without ARE structure and belonging to the CC GO category were more homogenous, showed higher accuracy for estimating wound age, and were appropriate for rat skeletal muscle wound age estimation. Supplemental data for this article is available online at https://doi.org/10.1080/20961790.2021.1986770 .
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Affiliation(s)
- Qiuxiang Du
- School of Forensic Medicine, Shanxi Medical University, Jinzhong, China
| | - Tana Dong
- Shandong Public Security Department, The Institute of Criminal Science and Technology, Jinan, China
| | - Yuanxin Liu
- School of Forensic Medicine, Shanxi Medical University, Jinzhong, China
| | - Xiyan Zhu
- Department of Military Traffic Medicine, Army Characteristic Medical Center, Chongqing, China
| | - Na Li
- School of Forensic Medicine, Shanxi Medical University, Jinzhong, China
| | - Lihong Dang
- School of Forensic Medicine, Shanxi Medical University, Jinzhong, China
| | - Jie Cao
- School of Forensic Medicine, Shanxi Medical University, Jinzhong, China
| | - Qianqian Jin
- School of Forensic Medicine, Shanxi Medical University, Jinzhong, China
| | - Junhong Sun
- School of Forensic Medicine, Shanxi Medical University, Jinzhong, China,CONTACT Junhong Sun
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Dong J, Liu S, Li Q, Wu L, Zhang C, Duan S, Zhang B, Yuan Y, Huang Z, Xing C, Mao H. The association of RNA-binding protein Human antigen R with kidney clinicopathologic features and renal outcomes in patients with diabetic nephropathy. Diabetes Res Clin Pract 2022; 193:110142. [PMID: 36343862 DOI: 10.1016/j.diabres.2022.110142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 10/15/2022] [Accepted: 10/28/2022] [Indexed: 11/06/2022]
Abstract
AIMS RNA-binding protein Human antigen R (HuR) is closely related to diabetic nephropathy (DN) pathogenesis. However, the capacity of histological HuR level as a biomarker for DN progression remains unclear. METHODS A total of 147 patients with type 2 diabetes mellitus who had biopsy-proven DN were enrolled. Renal outcomes were defined by doubling serum creatinine level or progression to end-stage renal disease (ESRD). A nomogram was built to predict renal outcomes based on Cox proportional hazards regression. RESULTS The median follow-up period was 31 months, during which 71 (48.30 %) patients confronted DN progression. Pearson's correlation indicated that histological HuR increased along with DN pathological class rising (r = 0.776, p < 0.001). Notably, multivariate Cox regression analysis showed that elevated HuR was associated with a greater risk of DN progression (HR 2.431, 95 %CI: 1.275-4.634, p = 0.007) beyond 6 months after renal biopsy. Patients in the higher HuR expression group had lower cumulative renal survival rates beyond the first 6 months. Simultaneously, a well-performed nomogram including HuR classification, was developed to predict the individual progression risk (C-index 0.828). CONCLUSIONS Our findings demonstrated that the histologic HuR expression was an independent risk factor for kidney progression beyond 6 months after renal biopsy in DN.
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Affiliation(s)
- Jiaxin Dong
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China
| | - Simeng Liu
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China
| | - Qing Li
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China
| | - Lin Wu
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China
| | - Chengning Zhang
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China
| | - Suyan Duan
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China
| | - Bo Zhang
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China
| | - Yanggang Yuan
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China
| | - Zhimin Huang
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China.
| | - Changying Xing
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China.
| | - Huijuan Mao
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China.
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Li W, Deng X, Chen J. RNA-binding proteins in regulating mRNA stability and translation: roles and mechanisms in cancer. Semin Cancer Biol 2022; 86:664-677. [PMID: 35381329 PMCID: PMC9526761 DOI: 10.1016/j.semcancer.2022.03.025] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 03/25/2022] [Accepted: 03/30/2022] [Indexed: 01/10/2023]
Abstract
RNA-binding proteins (RBPs) are key players in cellular physiology through posttranscriptional regulation of the expression of target RNA transcripts. By modulating the processing, stability and translation of cancer-related messenger RNA (mRNA) transcripts, a large set of RBPs play essential roles in various types of cancers. Perturbations in RBP activity have been causally associated with cancer development, tumor metabolism, drug resistance, cancer stem cell self-renewal, and tumor immune evasion. Here, we summarize the recent advances in cancer pathological roles and mechanisms of RBPs in regulating mRNA stability and translation with an emphasis on the emerging category of RNA modification-associated RBPs. The functional diversity of RBPs in different types of cancers and the therapeutic potential of targeting dysregulated RBPs for cancer treatment are also discussed.
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Affiliation(s)
- Wei Li
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia 91016, USA
| | - Xiaolan Deng
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia 91016, USA
| | - Jianjun Chen
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia 91016, USA; City of Hope Comprehensive Cancer Center, Duarte, CA 91010, USA; Gehr Family Center for Leukemia Research, City of Hope, Duarte, CA 91010, USA.
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7
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Si R, Cabrera JTO, Tsuji-Hosokawa A, Guo R, Watanabe M, Gao L, Lee YS, Moon JS, Scott BT, Wang J, Ashton AW, Rao JN, Wang JY, Yuan JXJ, Makino A. HuR/Cx40 downregulation causes coronary microvascular dysfunction in type 2 diabetes. JCI Insight 2021; 6:147982. [PMID: 34747371 PMCID: PMC8663561 DOI: 10.1172/jci.insight.147982] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 09/29/2021] [Indexed: 11/30/2022] Open
Abstract
Patients with diabetes with coronary microvascular disease (CMD) exhibit higher cardiac mortality than patients without CMD. However, the molecular mechanism by which diabetes promotes CMD is poorly understood. RNA-binding protein human antigen R (HuR) is a key regulator of mRNA stability and translation; therefore, we investigated the role of HuR in the development of CMD in mice with type 2 diabetes. Diabetic mice exhibited decreases in coronary flow velocity reserve (CFVR; a determinant of coronary microvascular function) and capillary density in the left ventricle. HuR levels in cardiac endothelial cells (CECs) were significantly lower in diabetic mice and patients with diabetes than the controls. Endothelial-specific HuR-KO mice also displayed significant reductions in CFVR and capillary density. By examining mRNA levels of 92 genes associated with endothelial function, we found that HuR, Cx40, and Nox4 levels were decreased in CECs from diabetic and HuR-KO mice compared with control mice. Cx40 expression and HuR binding to Cx40 mRNA were downregulated in CECs from diabetic mice. Cx40-KO mice exhibited decreased CFVR and capillary density, whereas endothelium-specific Cx40 overexpression increased capillary density and improved CFVR in diabetic mice. These data suggest that decreased HuR contributes to the development of CMD in diabetes through downregulation of gap junction protein Cx40 in CECs.
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Affiliation(s)
- Rui Si
- Department of Physiology, The University of Arizona (UA), Tucson, Arizona, USA.,Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Shaanxi, China
| | | | | | - Rui Guo
- Department of Physiology, The University of Arizona (UA), Tucson, Arizona, USA
| | - Makiko Watanabe
- Department of Physiology, The University of Arizona (UA), Tucson, Arizona, USA
| | - Lei Gao
- Department of Medicine, UCSD, La Jolla, California, USA
| | - Yun Sok Lee
- Department of Medicine, UCSD, La Jolla, California, USA
| | - Jae-Su Moon
- Department of Medicine, UCSD, La Jolla, California, USA
| | - Brian T Scott
- Department of Medicine, UCSD, La Jolla, California, USA
| | - Jian Wang
- Department of Physiology, The University of Arizona (UA), Tucson, Arizona, USA.,State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Anthony W Ashton
- Division of Perinatal Research, Kolling Institute of Medical Research, University of Sydney, New South Wales, Australia
| | - Jaladanki N Rao
- Department of Surgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Jian-Ying Wang
- Department of Surgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | | | - Ayako Makino
- Department of Physiology, The University of Arizona (UA), Tucson, Arizona, USA.,Department of Medicine, UCSD, La Jolla, California, USA
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Zhang J, Zhang Y, Gao J, Wang M, Li X, Cui Z, Fu G. Long Noncoding RNA Tug1 Promotes Angiotensin II-Induced Renal Fibrosis by Binding to Mineralocorticoid Receptor and Negatively Regulating MicroR-29b-3p. Hypertension 2021; 78:693-705. [PMID: 34333990 DOI: 10.1161/hypertensionaha.120.16395] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Juhong Zhang
- Department of Cardiology, Sir Run Run Shaw Hospital, Zhejiang University, Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, Hangzhou, China (J.Z., J.G., M.W., X.L., G.F.)
| | - Yuqing Zhang
- Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China (Y.Z.)
| | - Jing Gao
- Department of Cardiology, Sir Run Run Shaw Hospital, Zhejiang University, Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, Hangzhou, China (J.Z., J.G., M.W., X.L., G.F.)
| | - Meihui Wang
- Department of Cardiology, Sir Run Run Shaw Hospital, Zhejiang University, Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, Hangzhou, China (J.Z., J.G., M.W., X.L., G.F.)
| | - Xiaoting Li
- Department of Cardiology, Sir Run Run Shaw Hospital, Zhejiang University, Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, Hangzhou, China (J.Z., J.G., M.W., X.L., G.F.)
| | - Zhaoqiang Cui
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China (Z.C.)
| | - Guosheng Fu
- Department of Cardiology, Sir Run Run Shaw Hospital, Zhejiang University, Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, Hangzhou, China (J.Z., J.G., M.W., X.L., G.F.)
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9
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Inhibition of RNA-binding protein HuR reduces glomerulosclerosis in experimental nephritis. Clin Sci (Lond) 2020; 134:1433-1448. [PMID: 32478392 PMCID: PMC8086301 DOI: 10.1042/cs20200193] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 05/27/2020] [Accepted: 06/01/2020] [Indexed: 12/21/2022]
Abstract
Recent identification of an RNA-binding protein (HuR) that regulates mRNA turnover and translation of numerous transcripts via binding to an ARE in their 3′-UTR involved in inflammation and is abnormally elevated in varied kidney diseases offers a novel target for the treatment of renal inflammation and subsequent fibrosis. Thus, we hypothesized that treatment with a selective inhibition of HuR function with a small molecule, KH-3, would down-regulate HuR-targeted proinflammatory transcripts thereby improving glomerulosclerosis in experimental nephritis, where glomerular cellular HuR is elevated. Three experimental groups included normal and diseased rats treated with or without KH-3. Disease was induced by the monoclonal anti-Thy 1.1 antibody. KH-3 was given via daily intraperitoneal injection from day 1 after disease induction to day 5 at the dose of 50 mg/kg BW/day. At day 6, diseased animals treated with KH-3 showed significant reduction in glomerular HuR levels, proteinuria, podocyte injury determined by ameliorated podocyte loss and podocin expression, glomerular staining for periodic acid-Schiff positive extracellular matrix proteins, fibronectin and collagen IV and mRNA and protein levels of profibrotic markers, compared with untreated disease rats. KH-3 treatment also reduced disease-induced increases in renal TGFβ1 and PAI-1 transcripts. Additionally, a marked increase in renal NF-κB-p65, Nox4, and glomerular macrophage cell infiltration observed in disease control group was largely reversed by KH-3 treatment. These results strongly support our hypothesis that down-regulation of HuR function with KH-3 has therapeutic potential for reversing glomerulosclerosis by reducing abundance of pro-inflammatory transcripts and related inflammation.
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10
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Ignarski M, Rill C, Kaiser RWJ, Kaldirim M, Neuhaus R, Esmaillie R, Li X, Klein C, Bohl K, Petersen M, Frese CK, Höhne M, Atanassov I, Rinschen MM, Höpker K, Schermer B, Benzing T, Dieterich C, Fabretti F, Müller RU. The RNA-Protein Interactome of Differentiated Kidney Tubular Epithelial Cells. J Am Soc Nephrol 2019; 30:564-576. [PMID: 30867249 DOI: 10.1681/asn.2018090914] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Accepted: 01/20/2019] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND RNA-binding proteins (RBPs) are fundamental regulators of cellular biology that affect all steps in the generation and processing of RNA molecules. Recent evidence suggests that regulation of RBPs that modulate both RNA stability and translation may have a profound effect on the proteome. However, regulation of RBPs in clinically relevant experimental conditions has not been studied systematically. METHODS We used RNA interactome capture, a method for the global identification of RBPs to characterize the global RNA-binding proteome (RBPome) associated with polyA-tailed RNA species in murine ciliated epithelial cells of the inner medullary collecting duct. To study regulation of RBPs in a clinically relevant condition, we analyzed hypoxia-associated changes of the RBPome. RESULTS We identified >1000 RBPs that had been previously found using other systems. In addition, we found a number of novel RBPs not identified by previous screens using mouse or human cells, suggesting that these proteins may be specific RBPs in differentiated kidney epithelial cells. We also found quantitative differences in RBP-binding to mRNA that were associated with hypoxia versus normoxia. CONCLUSIONS These findings demonstrate the regulation of RBPs through environmental stimuli and provide insight into the biology of hypoxia-response signaling in epithelial cells in the kidney. A repository of the RBPome and proteome in kidney tubular epithelial cells, derived from our findings, is freely accessible online, and may contribute to a better understanding of the role of RNA-protein interactions in kidney tubular epithelial cells, including the response of these cells to hypoxia.
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Affiliation(s)
- Michael Ignarski
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital of Cologne, Cologne, Germany
| | - Constantin Rill
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital of Cologne, Cologne, Germany
| | - Rainer W J Kaiser
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital of Cologne, Cologne, Germany
| | - Madlen Kaldirim
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital of Cologne, Cologne, Germany
| | - René Neuhaus
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital of Cologne, Cologne, Germany
| | - Reza Esmaillie
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital of Cologne, Cologne, Germany
| | - Xinping Li
- Proteomics Core Facility, Max Planck Institute for Biology of Ageing, Cologne, Germany
| | - Corinna Klein
- Proteomics Facility, Cologne Excellence Cluster on Cellular Stress Responses in Aging-associated Diseases
| | - Katrin Bohl
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital of Cologne, Cologne, Germany
| | - Maike Petersen
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital of Cologne, Cologne, Germany
| | - Christian K Frese
- Proteomics Facility, Cologne Excellence Cluster on Cellular Stress Responses in Aging-associated Diseases
| | - Martin Höhne
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital of Cologne, Cologne, Germany
| | - Ilian Atanassov
- Proteomics Core Facility, Max Planck Institute for Biology of Ageing, Cologne, Germany
| | - Markus M Rinschen
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital of Cologne, Cologne, Germany
| | - Katja Höpker
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital of Cologne, Cologne, Germany
| | - Bernhard Schermer
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital of Cologne, Cologne, Germany.,Nephrolab, Cologne Excellence Cluster on Cellular Stress Responses in Aging-associated Diseases, Faculty of Medicine and University Hospital Cologne, and.,Systems Biology of Ageing Cologne, University of Cologne, Cologne, Germany
| | - Thomas Benzing
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital of Cologne, Cologne, Germany.,Nephrolab, Cologne Excellence Cluster on Cellular Stress Responses in Aging-associated Diseases, Faculty of Medicine and University Hospital Cologne, and.,Systems Biology of Ageing Cologne, University of Cologne, Cologne, Germany
| | - Christoph Dieterich
- Department of Internal Medicine III, Klaus Tschira Institute for Integrative Computational Cardiology, University Hospital Heidelberg, Heidelberg, Germany; and.,German Center for Cardiovascular Research (DZHK)-Partner site, Heidelberg/Mannheim, Germany
| | - Francesca Fabretti
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital of Cologne, Cologne, Germany
| | - Roman-Ulrich Müller
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital of Cologne, Cologne, Germany; .,Nephrolab, Cologne Excellence Cluster on Cellular Stress Responses in Aging-associated Diseases, Faculty of Medicine and University Hospital Cologne, and.,Systems Biology of Ageing Cologne, University of Cologne, Cologne, Germany
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11
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Tian P, Ou H, Wu F, Ma Y, Liu X, Chen Q, Dang H, Zou H. Interleukin-4-induced posttranscriptional gene regulation of CCL26 by the RNA-binding protein HuR in primary human nasal polyp-derived epithelial cells. Int Forum Allergy Rhinol 2018; 9:311-321. [PMID: 30472791 DOI: 10.1002/alr.22250] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 10/23/2018] [Accepted: 11/04/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND Much attention on the pathophysiology of nasal polyp (NP) has focused on eosinophils. Interleukin (IL)-4 and eotaxin-3 (C-C motif chemokine ligand 26, or CCL26) levels have been reported to be increased in eosinophilic nasal polyps. The aim of this study was to characterize CCL26 posttranscriptional regulation by the RNA-binding protein HuR in primary human nasal polyp-derived epithelial cells (hNPDECs) challenged with IL-4. METHODS A prospective, observational study was conducted. Nasal polyp tissues were obtained from eosinophilic (n = 12) and non-eosinophilic (n = 10) NP patients, and inferior turbinate (IT) tissues were taken from control subjects (n = 9) and cultured into hNPDECs. Expression of HuR and CCL26 were measured by immunohistochemistry, Western blot analysis, enzyme-linked immunoassay, and real-time polymerase chain reaction (PCR). The nucleocytoplasmic shuttling of HuR in hNPDECs was detected by immunofluorescence. Posttranscriptional regulation of CCL26 by HuR was tested by ribonucleoprotein immunoprecipitation assay (RIP) and dual-luciferase reporter assay. CCL26 mRNA stabilization was measured by quatititative PCR after treatment with actinomycin D. Student's t test and one-way analysis of variance were used. RESULTS Immunohistochemical data show that both HuR and CCL26 were highly expressed in NP tissues, especially eosinophilic NP tissues (p < 0.05). IL-4 stimulation increased CCL26 mRNA stability, and overexpression and knockdown of HuR affected CCL26 expression. Immunofluorescence data indicate that IL-4 altered the subcellular distribution of HuR. The RIP and dual-luciferase reporter assay results supply strong evidence for HuR binding to CCL26. CONCLUSION Our results provide strong support for the hypothesis that IL-4-induced expression of CCL26 in hNPDECs relies partly on CCL26 mRNA stabilization mediated by the interaction of HuR with CCL26 3'UTR.
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Affiliation(s)
- Peng Tian
- Department of Otorhinolaryngology-Head and Neck Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China
| | - Huashuang Ou
- Department of Otorhinolaryngology-Head and Neck Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China
| | - Fan Wu
- Department of Otorhinolaryngology-Head and Neck Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China
| | - Yun Ma
- Department of Otorhinolaryngology-Head and Neck Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China
| | - Xiang Liu
- Department of Otorhinolaryngology-Head and Neck Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China
| | - Qiujian Chen
- Department of Otorhinolaryngology-Head and Neck Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China
| | - Hua Dang
- Department of Otorhinolaryngology-Head and Neck Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China
| | - Hua Zou
- Department of Otorhinolaryngology-Head and Neck Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China
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12
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Yang C, Kelaini S, Caines R, Margariti A. RBPs Play Important Roles in Vascular Endothelial Dysfunction Under Diabetic Conditions. Front Physiol 2018; 9:1310. [PMID: 30294283 PMCID: PMC6158626 DOI: 10.3389/fphys.2018.01310] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Accepted: 08/30/2018] [Indexed: 12/17/2022] Open
Abstract
Diabetes is one of the major health care problems worldwide leading to huge suffering and burden to patients and society. Diabetes is also considered as a cardiovascular disorder because of the correlation between diabetes and an increased incidence of cardiovascular disease. Vascular endothelial cell dysfunction is a major mediator of diabetic vascular complications. It has been established that diabetes contributes to significant alteration of the gene expression profile of vascular endothelial cells. Post-transcriptional regulation by RNA binding proteins (RBPs) plays an important role in the alteration of gene expression profile under diabetic conditions. The review focuses on the roles and mechanisms of critical RBPs toward diabetic vascular endothelial dysfunction. Deeper understanding of the post- transcriptional regulation by RBPs could lead to new therapeutic strategies against diabetic manifestation in the future.
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Affiliation(s)
- Chunbo Yang
- Centre for Experimental Medicine, Queens University Belfast, Belfast, United Kingdom
| | - Sophia Kelaini
- Centre for Experimental Medicine, Queens University Belfast, Belfast, United Kingdom
| | - Rachel Caines
- Centre for Experimental Medicine, Queens University Belfast, Belfast, United Kingdom
| | - Andriana Margariti
- Centre for Experimental Medicine, Queens University Belfast, Belfast, United Kingdom
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13
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Jiang S, Xie Y, He Z, Zhang Y, Zhao Y, Chen L, Zheng Y, Miao Y, Zuo Z, Ren J. m6ASNP: a tool for annotating genetic variants by m6A function. Gigascience 2018; 7:4958982. [PMID: 29617790 PMCID: PMC6007280 DOI: 10.1093/gigascience/giy035] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 02/07/2018] [Accepted: 03/22/2018] [Indexed: 12/12/2022] Open
Abstract
Background Large-scale genome sequencing projects have identified many genetic variants for diverse diseases. A major goal of these projects is to characterize these genetic variants to provide insight into their function and roles in diseases. N6-methyladenosine (m6A) is one of the most abundant RNA modifications in eukaryotes. Recent studies have revealed that aberrant m6A modifications are involved in many diseases. Findings In this study, we present a user-friendly web server called "m6ASNP" that is dedicated to the identification of genetic variants that target m6A modification sites. A random forest model was implemented in m6ASNP to predict whether the methylation status of an m6A site is altered by the variants that surround the site. In m6ASNP, genetic variants in a standard variant call format (VCF) are accepted as the input data, and the output includes an interactive table that contains the genetic variants annotated by m6A function. In addition, statistical diagrams and a genome browser are provided to visualize the characteristics and to annotate the genetic variants. Conclusions We believe that m6ASNP is a very convenient tool that can be used to boost further functional studies investigating genetic variants. The web server "m6ASNP" is implemented in JAVA and PHP and is freely available at [60].
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Affiliation(s)
- Shuai Jiang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University, Guangzhou 510060, China
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510275, China
| | - Yubin Xie
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510275, China
| | - Zhihao He
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510275, China
| | - Ya Zhang
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510275, China
| | - Yuli Zhao
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510275, China
| | - Li Chen
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510275, China
| | - Yueyuan Zheng
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510275, China
| | - Yanyan Miao
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510275, China
| | - Zhixiang Zuo
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University, Guangzhou 510060, China
| | - Jian Ren
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University, Guangzhou 510060, China
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510275, China
- Collaborative Innovation Center of High Performance Computing, National University of Defense Technology, Changsha 410073, China
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14
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Bideak A, Blaut A, Hoppe JM, Müller MB, Federico G, Eltrich N, Gröne HJ, Locati M, Vielhauer V. The atypical chemokine receptor 2 limits renal inflammation and fibrosis in murine progressive immune complex glomerulonephritis. Kidney Int 2018; 93:826-841. [PMID: 29395335 DOI: 10.1016/j.kint.2017.11.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 10/28/2017] [Accepted: 11/16/2017] [Indexed: 12/12/2022]
Abstract
The atypical chemokine receptor 2 (ACKR2), also named D6, regulates local levels of inflammatory chemokines by internalization and degradation. To explore potential anti-inflammatory functions of ACKR2 in glomerulonephritis, we induced autologous nephrotoxic nephritis in C57/BL6 wild-type and Ackr2-deficient mice. Renal ACKR2 expression increased and localized to interstitial lymphatic endothelium during nephritis. At two weeks Ackr2-/-mice developed increased albuminuria and urea levels compared to wild-type mice. Histological analysis revealed increased structural damage in the glomerular and tubulointerstitial compartments within Ackr2-/- kidneys. This correlated with excessive renal leukocyte infiltration of CD4+ T cells and mononuclear phagocytes with increased numbers in the tubulointerstitium but not glomeruli in knockout mice. Expression of inflammatory mediators and especially markers of fibrotic tissue remodeling were increased along with higher levels of ACKR2 inflammatory chemokine ligands like CCL2 in nephritic Ackr2-/- kidneys. In vitro, Ackr2 deficiency in TNF-stimulated tubulointerstitial tissue but not glomeruli increased chemokine levels. These results are in line with ACKR2 expression in interstitial lymphatic endothelial cells, which also assures efflux of activated leukocytes into regional lymph nodes. Consistently, nephritic Ackr2-/- mice showed reduced adaptive cellular immune responses indicated by decreased regional T-cell activation. However, this did not prevent aggravated injury in the kidneys of Ackr2-/- mice with nephrotoxic nephritis due to simultaneously increased tubulointerstitial chemokine levels, leukocyte infiltration and fibrosis. Thus, ACKR2 is important in limiting renal inflammation and fibrotic remodeling in progressive nephrotoxic nephritis. Hence, ACKR2 may be a potential target for therapeutic interventions in immune complex glomerulonephritis.
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Affiliation(s)
- Andrei Bideak
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Alexander Blaut
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Ludwig-Maximilians-University Munich, Munich, Germany
| | - John M Hoppe
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Martin B Müller
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Giuseppina Federico
- Department of Cellular and Molecular Pathology, German Cancer Research Center, Heidelberg, Germany
| | - Nuru Eltrich
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Hermann-Josef Gröne
- Department of Cellular and Molecular Pathology, German Cancer Research Center, Heidelberg, Germany
| | - Massimo Locati
- Humanitas Clinical and Research Center, Rozzano, Italy; Department of Medical Biotechnologies and Translational Medicine, Università degli Studi di Milano, Milan, Italy
| | - Volker Vielhauer
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Ludwig-Maximilians-University Munich, Munich, Germany.
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15
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Roux M, Perret C, Feigerlova E, Mohand Oumoussa B, Saulnier PJ, Proust C, Trégouët DA, Hadjadj S. Plasma levels of hsa-miR-152-3p are associated with diabetic nephropathy in patients with type 2 diabetes. Nephrol Dial Transplant 2018; 33:2201-2207. [DOI: 10.1093/ndt/gfx367] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 12/07/2017] [Indexed: 11/13/2022] Open
Affiliation(s)
- Maguelonne Roux
- Sorbonne Universités, UPMC Université Paris 06, INSERM UMR-S 1166, Paris, France
- ICAN Institute for Cardiometabolism and Nutrition, Paris, France
| | - Claire Perret
- Sorbonne Universités, UPMC Université Paris 06, INSERM UMR-S 1166, Paris, France
- ICAN Institute for Cardiometabolism and Nutrition, Paris, France
| | - Eva Feigerlova
- CHU de Poitiers, Service d'Endocrinologie, Poitiers, France
- Université de Poitiers, UFR Médecine Pharmacie, Poitiers, France
- CHU de Poitiers, Centre d’Investigation Clinique, Poitiers, France
- INSERM, CIC 1402 & U1082, Poitiers, France
| | | | - Pierre-Jean Saulnier
- CHU de Poitiers, Service d'Endocrinologie, Poitiers, France
- Université de Poitiers, UFR Médecine Pharmacie, Poitiers, France
- CHU de Poitiers, Centre d’Investigation Clinique, Poitiers, France
- INSERM, CIC 1402 & U1082, Poitiers, France
| | - Carole Proust
- Sorbonne Universités, UPMC Université Paris 06, INSERM UMR-S 1166, Paris, France
- ICAN Institute for Cardiometabolism and Nutrition, Paris, France
| | - David-Alexandre Trégouët
- Sorbonne Universités, UPMC Université Paris 06, INSERM UMR-S 1166, Paris, France
- ICAN Institute for Cardiometabolism and Nutrition, Paris, France
| | - Samy Hadjadj
- CHU de Poitiers, Service d'Endocrinologie, Poitiers, France
- Université de Poitiers, UFR Médecine Pharmacie, Poitiers, France
- CHU de Poitiers, Centre d’Investigation Clinique, Poitiers, France
- INSERM, CIC 1402 & U1082, Poitiers, France
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16
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Nutter CA, Kuyumcu-Martinez MN. Emerging roles of RNA-binding proteins in diabetes and their therapeutic potential in diabetic complications. WILEY INTERDISCIPLINARY REVIEWS-RNA 2017; 9. [PMID: 29280295 DOI: 10.1002/wrna.1459] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 10/19/2017] [Accepted: 11/05/2017] [Indexed: 12/11/2022]
Abstract
Diabetes is a debilitating health care problem affecting 422 million people around the world. Diabetic patients suffer from multisystemic complications that can cause mortality and morbidity. Recent advancements in high-throughput next-generation RNA-sequencing and computational algorithms led to the discovery of aberrant posttranscriptional gene regulatory programs in diabetes. However, very little is known about how these regulatory programs are mis-regulated in diabetes. RNA-binding proteins (RBPs) are important regulators of posttranscriptional RNA networks, which are also dysregulated in diabetes. Human genetic studies provide new evidence that polymorphisms and mutations in RBPs are linked to diabetes. Therefore, we will discuss the emerging roles of RBPs in abnormal posttranscriptional gene expression in diabetes. Questions that will be addressed are: Which posttranscriptional mechanisms are disrupted in diabetes? Which RBPs are responsible for such changes under diabetic conditions? How are RBPs altered in diabetes? How does dysregulation of RBPs contribute to diabetes? Can we target RBPs using RNA-based methods to restore gene expression profiles in diabetic patients? Studying the evolving roles of RBPs in diabetes is critical not only for a comprehensive understanding of diabetes pathogenesis but also to design RNA-based therapeutic approaches for diabetic complications. WIREs RNA 2018, 9:e1459. doi: 10.1002/wrna.1459 This article is categorized under: RNA in Disease and Development > RNA in Disease RNA Processing > Splicing Regulation/Alternative Splicing Translation > Translation Regulation.
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Affiliation(s)
- Curtis A Nutter
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, Texas
| | - Muge N Kuyumcu-Martinez
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, Texas.,Department of Neuroscience and Cell Biology, University of Texas Medical Branch, Galveston, Texas.,Institute for Translational Sciences, University of Texas Medical Branch, Galveston, Texas
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17
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Feigerlová E, Battaglia-Hsu SF, Hauet T, Guéant JL. Extracellular vesicles as immune mediators in response to kidney injury. Am J Physiol Renal Physiol 2017; 314:F9-F21. [PMID: 28855190 DOI: 10.1152/ajprenal.00336.2017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Important progress has been made on cytokine signaling in response to kidney injury in the past decade, especially cytokine signaling mediated by extracellular vesicles (EVs). For example, EVs released by injured renal tubular epithelial cells (TECs) can regulate intercellular communications and influence tissue recovery via both regulating the expression and transferring cytokines, growth factors, as well as other bioactive molecules at the site of injury. The effects of EVs on kidney tissue seem to vary depending on the sources of EVs; however, the literature data are often inconsistent. For example, in rodents EVs derived from mesenchymal stem cells (MSC-EVs) and endothelial progenitor cells (EPC-EVs) can have both beneficial and harmful effects on injured renal tissue. Caution is thus needed in the interpretation of these data as contradictory findings on EVs may not only be related to the origin of EVs, they can also be caused by the different methods used for EV isolation and the physiological and pathological states of the tissues/cells under which they were obtained. Here, we review and discuss our current understanding related to the immunomodulatory function of EVs in renal tubular repair in the hope of encouraging further investigations on mechanisms related to their antiinflammatory and reparative role to better define the therapeutic potential of EVs in renal diseases.
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Affiliation(s)
- Eva Feigerlová
- INSERM U954, Nutrition Génétique et Exposition aux Risques Environnementaux, Medical Faculty, University of Lorraine, Lorraine, France.,Medical Faculty, University of Lorraine, Lorraine, France.,INSERM, UMR 1082, Poitiers , France.,Medical and Pharmaceutical Faculty, University of Poitiers , Poitiers , France
| | - Shyue-Fang Battaglia-Hsu
- INSERM U954, Nutrition Génétique et Exposition aux Risques Environnementaux, Medical Faculty, University of Lorraine, Lorraine, France.,Regional University Hospital Center of Nancy, Vandœuvre les Nancy, France
| | - Thierry Hauet
- INSERM, UMR 1082, Poitiers , France.,Medical and Pharmaceutical Faculty, University of Poitiers , Poitiers , France.,Service de Biochimie, Pôle BIOSPHARM, CHU de Poitiers, Poitiers , France
| | - Jean-Louis Guéant
- INSERM U954, Nutrition Génétique et Exposition aux Risques Environnementaux, Medical Faculty, University of Lorraine, Lorraine, France.,Regional University Hospital Center of Nancy, Vandœuvre les Nancy, France
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18
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HuR-Dependent Editing of a New Mineralocorticoid Receptor Splice Variant Reveals an Osmoregulatory Loop for Sodium Homeostasis. Sci Rep 2017; 7:4835. [PMID: 28684740 PMCID: PMC5500589 DOI: 10.1038/s41598-017-04838-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 05/12/2017] [Indexed: 02/04/2023] Open
Abstract
Aldosterone and the Mineralocorticoid Receptor (MR) control hydroelectrolytic homeostasis and alterations of mineralocorticoid signaling pathway are involved in the pathogenesis of numerous human diseases, justifying the need to decipher molecular events controlling MR expression level. Here, we show in renal cells that the RNA-Binding Protein, Human antigen R (HuR), plays a central role in the editing of MR transcript as revealed by a RNA interference strategy. We identify a novel Δ6 MR splice variant, which lacks the entire exon 6, following a HuR-dependent exon skipping event. Using isoform-specific TaqMan probes, we show that Δ6 MR variant is expressed in all MR-expressing tissues and cells and demonstrate that extracelullar tonicity regulates its renal expression. More importantly, this splice variant exerts dominant-negative effects on transcriptional activity of the full-length MR protein. Collectively, our data highlight a crucial role of HuR as a master posttranscriptional regulator of MR expression in response to osmotic stress. We demonstrate that hypotonicity, not only enhances MR mRNA stability, but also decreases expression of the Δ6 MR variant, thus potentiating renal MR signaling. These findings provide compelling evidence for an autoregulatory feedback loop for the control of sodium homeostasis through posttranscriptional events, likely relevant in renal pathophysiological situations.
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